A011117 formatted as a triangular array:
| | | | | | | | | 1 | | | | | | | | | |
| | | | | | | | 1 | | 1 | | | | | | | | |
| | | | | | | 1 | | 2 | | 3 | | | | | | | |
| | | | | | 1 | | 3 | | 7 | | 11 | | | | | | |
| | | | | 1 | | 4 | | 12 | | 28 | | 45 | | | | | |
| | | | 1 | | 5 | | 18 | | 52 | | 121 | | 197 | | | | |
| | | 1 | | 6 | | 25 | | 84 | | 237 | | 550 | | 903 | | | |
| | 1 | | 7 | | 33 | | 125 | | 403 | | 1119 | | 2591 | | 4279 | | |
| 1 | | 8 | | 42 | | 176 | | 630 | | 1976 | | 5424 | | 12536 | | 20793 | |
| 1 | | 9 | | 52 | | 238 | | 930 | | 3206 | | 9860 | | 26832 | | 61921 | | 103049 |
A011117 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| 3 | 7 | 12 | 18 | 25 | 33 | 42 | 52 | | |
| 11 | 28 | 52 | 84 | 125 | 176 | 238 | | | |
| 45 | 121 | 237 | 403 | 630 | 930 | | | | |
| 197 | 550 | 1119 | 1976 | 3206 | | | | | |
| 903 | 2591 | 5424 | 9860 | | | | | | |
| 4279 | 12536 | 26832 | | | | | | | |
| 20793 | 61921 | | | | | | | | |
| 103049 | | | | | | | | | |
A011117 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| | 3 | 7 | 12 | 18 | 25 | 33 | 42 | 52 |
| | | 11 | 28 | 52 | 84 | 125 | 176 | 238 |
| | | | 45 | 121 | 237 | 403 | 630 | 930 |
| | | | | 197 | 550 | 1119 | 1976 | 3206 |
| | | | | | 903 | 2591 | 5424 | 9860 |
| | | | | | | 4279 | 12536 | 26832 |
| | | | | | | | 20793 | 61921 |
| | | | | | | | | 103049 |
|
